The Middle and Upper Mississippi River: Ohio River to Minneapolis

1880 high water 500 All elevations AERIAL CABLE CROSSING Aerial wire crossing apolis barges Blue Island Burlington & Quincy CHANNEL LINE Channel Span CHART Chicago Corps of Engrs COUNTY BOUNDARY Datum 1912 Adjustment Dept DUBUQUE Elevation Low Steel elevations refer feet above high feet above low-water feet above pool Gage Highway Bridge Horizontal clearance ILLINOIS INLAND WATERWAYS CORP IOWA ISLAND foot ISLAND head ISLAND ISLAND LANDING LEVEE DISTRICT Level Datum 1912 LOCK & DAM LOCK AND DAM Louis low-water datum Mean Sea Level MID CHANNEL SCALE MILES ABOVE OHIO Miles below Minne Miles Right Milwaukee Minneapolis MINNESOTA OHIO RIVER partly inundated Paul & Pacific POOL LINE pool stage Recorded High Water refer to Mean RIVER mouth Rock Island ROLLER GATES SCALE OF FEET Sea Level Datum Shokokon SLOUGH lower end SLOUGH upper end steamer SUBMARINE CABLE CROSSING SUBMARINE PIPE CROSSING TAINTER GATES TERMINAL UPPER MISSISSIPPI RIVER Vertical Clearance vessel